Income and Expenses - Summary of Cost of Sales and Services (Detail) - PHP (₱) ₱ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Analysis Of Income And Expense [Abstract]
Cost of computers, mobile handsets and broadband data modems (Note 18)	₱ 9,402	₱ 10,513	₱ 10,277
Cost of services (Note 18)	3,680	3,429	2,572
Cost of point-product-sales (Note 18)	347	485	784
Total cost of sales and services	₱ 13,429	₱ 14,427	₱ 13,633

The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories.

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